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2 years ago

Calculate the molarity of the two solutions.

Chemistry

1 answer:

zmey [24]2 years ago

4 0

Answer:

a) 0.100 M

b) 0.395 M

Explanation:

a) Calculate the molarity of a solution that contains 0.200 moles of NaOH (solute) in 2.00 L of solution

We will use the following expression for molarity.

[NaOH] = moles of solute / liters of solution

[NaOH] = 0.200 mol/2.00 L = 0.100 M

b) Calculate the molarity for a solution that contains 15.5 g of NaCl (solute, 58.44 g/mol) in 671 mL of solution

We will use the following expression for molarity.

[NaCl] = mass of solute / molar mass of solute × liters of solution

[NaCl] = 15.5 g / 58.44 g/mol × 0.671 L = 0.395 M

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Define atomic size, electronegativity, and ionization energy and explain how they vary at different places on the periodic table

anygoal [31]

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3 years ago

If the pressure of 125 cm3 of nitrogen gas at 100 °c decreases from 885 torr to 225torr, what is the final volume? assume temper

navik [9.2K]

Suppose the Gas is acting ideally, Then, According to Ideal Gas Equation;

P₁ V₁ = P₂ V₂ ----- (1)
Data Given:
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3 years ago

Is the speed on this graph increasing or constant?

solong [7]

Answer:

The speed is constant.

Explanation:

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2 years ago

Read 2 more answers

Can you help me please

melomori [17]

Answer:

I don't get yuh language kindly

6 0

3 years ago

A 4.215 g sample of a compound containing only carbon, hydrogen, and oxygen is burned in an excess of oxygen gas, producing 9.58

Scilla [17]

Answer:

$\% O=27.6\%$

Explanation:

Hello,

In this case, for the sample of the given compound, we can compute the moles of each atom (carbon, hydrogen and oxygen) that is present in the sample as shown below:

- Moles of carbon are contained in the 9.582 grams of carbon dioxide:

$n_C=9.582gCO_2*\frac{1molCO_2}{44gCO_2}*\frac{1molC}{1molCO_2} =0.218molC$